I am currently working on noble gas configurations in chemistry and I am having a hard time understanding why I got two questions wrong on a practice.

The instructions for the practice are here:

Write out the noble gas configuration for the element. Enter your answer with all values without any spaces, hyper scripts or subscripts

Example: S- (These are meant to be in exponential format) [Ne]3s23p4 --> [Ne]3s23p4

My questions are:

1. Write the noble gas configuration for Zr:

2. Write the noble gas configuration for Ho:

My answers were:

1. [Kr]5s24p64d2

2. [Xe]6s25p64f11

I am still getting the answers wrong. Where did I go wrong in my configurations?

You wrote to much p- Electrons.

Look up the total configuration of Krypton and Xenon.

predicted electron configurations for transition elements and the lanthanide and actanides are often wrong, zirconium is 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s2 or [Kr] 4s2, 3d10, 4p6, 5s2 and holmium is 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 4d10, 5s2, 5p6, 4f11, 6s2 or [Xe] 4f11 6s2

Dont post answers for 3  year old threads, probably the people not more alive.

Edited January 2, 20233 yr by chenbeier